It's very well done! I can't even begin to imagine how you managed to get so much work, detail and charme done with such a small team, budget and timeframe. That's really impressive!
However, I think it's somewhat unfortunate that you copied so many essential beats from Little Nightmares. LN is already a popular, unique and great game. So if you take this much inspiration from it, you had best made sure that you EXCEED the original or put a unique twist to it. Of course, that's gonna be difficult, since LN had a much bigger team and budget, but if you don't surpass LN, it will always breath down this project's neck and even though Obusite is a great game, the presence of LN makes it a "great game, but LN did it somewhat better." And I think your hard work deserves more recognition than that! So I'm excited to see more project in the future from you guys!